a) 20 Quires in a Ream / 20 Qurush in a Riyalb) 20 Years Slept by Rip Van Winklec) 20 Minute Tea [timeout?] in a Cricket Match d) 20 Sectors on a Dart Boarde) 20 Pennyweights in a Troy Ouncef) 20 Years for a Criminal Actg) 20 Fluid Ounces in a Pint (Imperial)i) 20 Nickels in a Dollarj) 20 Vertices in a Regular Dodecahedronk) 20 Grains in a Scruple (Apothecaries')l) 20 Faces in a Regular Icosahedronm) 20 Units in a Scoren) 20 Shillings in a Pound (Sterling)